Basic Acoustics
(course ACO 501)

Basic acoustics

  • Terminology and definitions
  • The deciBel
  • Sound pressure/sound pressure level
  • Sound power/sound power level
  • Loudness
  • Dealing with decibels
  • Wave propagation
  • Sound

Vibration and noise

  • Relationship between sound and vibration measurements
  • Use of vibration measurements to help analyze sound problems

Instrumentation

  • Sound level meters - standards and functions
  • Spectrum analyzers - fractional octave, real time and FFT
  • Microphones - types and applications - pressure, free field, condenser, electret
  • Preamplifiers, cabling and other issues

Measurement procedures and standards

  • General and specific test standards
  • Sound power
  • Order tracking
  • Acoustic intensity

Test spaces

  • Sound propagation out-of-doors
  • Sound propagation in a room - reverberation, anechoic and hemi-anechoic rooms
  • Sound propagation in other spaces

Acoustic materials - absorption, barrier, damping - applications

Laboratory demonstrations

Data reduction - reducing data into something manageable

Data analysis - interpreting all that data

Setting up a test program

Documentation and reporting

Possible extensions

  • Greater depth on any of the topics listed above
  • Sound quality
  • Operating deflection shapes and modal analysis
  • Noise reduction
 
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Check our Vibration and Shock Glossary. You will find important words and their definitions. This list evolved from Wayne's 50 years of work experience and it's updated frequently.
 


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